Improved ore-washer



flnitr gtutr @einem (utilita RUDOLPH BOEHM, OF CHICAGO,

ILLINOIS.

Letters .Patent No.'90,227, dated Ma/y 18, 1869. Y

IMPROVE!) ORE-WASHER.

The Schedule referred to in than Lettera Patent and making part of the lame.

' others skilled in the art to make and use the same, reference being hadto the accompanying drawings, and letters marked thereon, making a part of this specification, in which- Figure 1 is a vertical longitudinal section of my invention taken on the line a: x, g. 2.

Figure 2, a plan or top view of the table, water# trough, and sluice, with the upper part of the framework removed.

Figures 3 and 4 are elevations of the ends of the washer. f

Figure 5, a perspective representation of the camshaft which gives a reciprocating motion to the taf ble.

The present invention relates to an improvement in l that class of ore-washers which are more especially designed toV separate ne particles of 'precious metals from silica, sand, loam, or clay, or from any other simple or compound substance; and

Its nature consists in an inclined table,`which is divided into two or more equal compartments hung to a frame, and arranged to have a longitudinal motion by means of a cam-shaft and spring, said table supporting two or more sluices, in which the crude material is put, and also a perforated spout for equalizing the iiow of water over the table while the ore is being separated.

`g represents a substantial foundation, which is made of wood, or other suitable material, and supports two central postsq, and four posts q, the latter being inclined inward longitudinally with said foundation, for

the better support of the side beams p, iig. 1, and the end ties p', figs. 3 and 4.

`A table, W,.gs. 1, 2, 3, and .4, made of wood or iron, (according tothe durability required,)'is properly strengthened with cross-beams vZ underneath, and so suspended with-screw-rods O Q, fig.' 1, fastened tothe edges of the table at 0,-g, 2, and put through the beams p, that it has a suitable inclinationto carryany substance thereon over its edge, and into a suitable receptacle used to receive it, said .table being divided into two or more compartments by means of the strips D, shown at figs. 1, 2, 3, and 4, in order that the metal, may be gathered at suitable places, as hereinafter e shown under the hea'd of operation.

The table at its upper edge supports two sluices, j,

in which the substance tobe separated is put prepara tory to its passing through the openings 11 and on to the table. v I

And above it is suspended, by means 'of iron straps 4, a spout, e, figs. 1 vand 2, which has perfolations in its bottom, through which water on to the table. l

The screw-rods O O may be so adjusted by-turnng the swivels as to give to the table, when it is desired, a greater or less inclination, according to the nature of the substance from which the vore is to be separated.

A substantial bed-piece, E, (ig. 1, is placed 1ongi tudinally with and fastened to the undersidev of the table W, and it supports three or more T-shaped brackets F, through which a screw-rod, m, is put, the function of said rod being hereinafter shown.

K, gs. 1, 2, and 3, represents what I term a bumper, rigidly fastened to the foundation g, and has an iron nose-piece, i-, figs. 1 and 2, fastened to it, in order that it may withstand the concussion caused by the table striking against it.

A shaft, n, figs.-1- and 5, runslin suitable bearings, fastened to the foundation, and it supports a cam, h, which is used togive a reciprocating motion to the table W. v

And to accomplish this, a plate, l, jointed to the nosing i, extends downward, and between the cam-2 and the end of the screw-rod m, and it is made to vibrute by means of said cam, and give the rod ma lie-- ciprocatiug motion, and consequently communicate the same motion to the table W.

A spring,l r, figs.V 1 and 2,- being attachedto a post,

q", and bearingagaiust the end of the bed-piece E,

throws the table back at each successive turn of the cam.

The shaft n is to have about three hundred revolutions to the minute, andthe power is appliedto the end 3 by any .ordinary method usually employed for a similar Purpose. f Operation.

t By thismeans for operating thev tableWit is forced back from the cam 2 veryl gently; but on its return it.

. substances. 4Pulveriaed rock, sand, or other substance'having the the, ore should be first mixed with sufficient water 'to make it run slowly.- Itis then conveyed to the sluices f by means of asp'outfor otherwise, as most convenient. v

The table is then putin motionby means of the cam aforesaid, and the substance to be washed (by its own specific gravity) gradually passes to the lower edge ofthe table, and tallsolf, the lightervsubstance passing in the directionindicated bythe darts 5, and

the heavier in the diretion of the dartsA d and. B d, 2. The combntion of the cam 2, shaft fn, bumper K, as shown at fig. 2, while at the same time sueient depending-plate l, T-braickets F, screw-rod m, spring water is made to pass through'the perforated spout e r, table W,'s 1uices f, and suspended trough E, :is deto liquefy the substan. scribed. ,f

Havng'thus fully described my invention, RUDOLPH BOEHM.

What I clainnanddesirev to secure by Letters Patl l ent of the United States, isf- Witnesses:

1. The combination of the table W, screw-rods 0, GEO. L. OEAPIN, suspended water-trough e, and siuiees f, as and forI E. E. GmsoN.

the purpose set forth. 

